Improvement in elevators



C; F. @L M. STEWART.

Elevators.

Patented!19.27.1874.1

WITNESSES UNITED STATES PATENT OFFICE.

CHARLES F. STEWART AND MILTON STEWART, OF MUNIE, INDIANA.

IMPROVEMENT IN ELEVATORS.

Specication forming part of Letters Patent No. 146,847, dated January `27, 18?/1; application filed November 22, 1873. r

To all whom it may concern.:

Be it known that we, CHARLES F. STEW AnT and MILTON STEWART, of Muncie, inthe county of Delaware and State of Indiana, have invented a new and Improved Brick-Elevator, of which the following is a specication:

ln the accompanying drawing, Figure 1 represents a front elevation of our improved apparatus for hoisting bricks; and Fig. 2, a vertical d of the bricklayers with rapidity and promptness and a reduced number of hands.

The invention will rst be fully described, and then pointed out in the claims.

A in the drawing represents the mainv or supl porting frame of the brick-elevatin g or hoisting apparatus, which is made of timber of suitable size and strength, according to the height to be reached by the same. The lower ends of the side pieces A are pivoted to shoes a of a strong lateral piece, B, which again turns by a central bolt, b, in a stable base part, C, of strong timber. The base part C rests on the ground and remains firmly in position thereon, while the main frame A may be swung into any direction and inclination required, by means of bolt b and pivot-shoes a. For the purpose of transporting the elevator from one place to another, the base part C and piece B are brought under frame A, so that the whole takes up less space and requires no detaching of parts. Main frame A is extended'to different heights by the sliding frames D, which are guided between the side pieces A and the lateral pieces d. The extension-frames 1) are of different widths, one being narrower than the other, the wider one forming the support and guide for the narrower. The mainframe A and extensionframes D, with the exception of the innermost, carry at their upper ends rollers e, which turn in bearings of the side timbers. The middle parts of the rollers e are of larger diameter than the end parts f, and are connected by ropes e with a roller, g, of the lower part of the main frame, while the end parts f are connected by ropes fl to staples f2 at the lower end of the corresponding frame D. When the lower roller gis turned by a crank with ratchetwheel and pawl, ropes c are wound around the saine, turning the rollers e andcausing the ,y

winding up of ropes f1 in opposite directions on the end parts f. The extension-frames D are thereby hoisted to the height required by the state of the building. The upper ends of main frame A and extension-frames D are provided with hooks or staples h, for attaching the bracing-ropes h', by which the apparatus is firmly retained in the inclined position for work. The bracing-ropes h are applied to stakes driven into the ground sidewise and in front of the apparatus, so that the requisite stability of the vapparatus is obtained. A drum, E,isapplied at the lower part of main frame A, and rotated d by means of a hand-crank, i, and cog-wheels i. A central recess, l, of drum E guides a twisted driving-belt, m, which connects with a second drum, E, at the upper end of the narrowest innermost extension-frame I). Both drums E have projecting end iianges a, which guide the endless chain or belt E,to which the buckets G are applied. The belt Fis stretched tightly over the drums, and is carried around with them without interfering with drivingbelt m. The buckets Gare, by preference, of

a size large enough to take up one brick at a time. The bricks are putin by an attendant, carried up and deposited on a chute, H, which is pivoted to arms o at the upper rear end of frame D, below drum E. The front end ot' chute H is supported on a rod, 19, adjustable` in hangers p of arms o, so that a suitable inclination of the chut-e is obtained for imparting sufficient impetus to the bricks to becarried by an extension of the chute to the place of work, where they are taken up by the workman. The driving-belt m, as well as endless belt F, is lengthened by inserting extensionpieces, according to the height` to which` the frames have to be extended, the pieces on the driving belt bein g connected by hooks and eyes, those of the endless belt by hinge-joints and cross-bolts. on the extension-pieces of the endless belt is thc same as those on the main `part of the belt,

The distance of the buckets y side pieces A pivoted to piece B, as and for the purpose described.

2. The combination, in an e1evator-fra1ne,A, of the pivoted sides A A and intermediate Slides D of dil'erenb Width, the narrower guided between the Wider, in the manner and for the purpose specied.

CHARLES F. STEWART.

h1 MILTON xs STEWART.

mark.

Witnesses P. F. DAYIS, WALTER L. DAvis. 

